Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/html/skarbysmaku/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php:195 Stack trace: #0 /var/www/html/skarbysmaku/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php(152): Jetpack_Memberships->register_init_hook() #1 /var/www/html/skarbysmaku/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php(847): Jetpack_Memberships::get_instance() #2 {main} thrown in /var/www/html/skarbysmaku/wp-content/plugins/jetpack/modules/memberships/class-jetpack-memberships.php on line 195